best i git out of a new one is 3 yrs. In reading the manual the engine has AUTOMATIC COMPRESSION RELEASE" to aid in starting. You must log in or register to reply here. Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors. Did you get a Kohler starter or an aftermarket? One downside of a compression release engine brake is the amount of noise it makes. I started working on my C-161 today.It has a 16 horse Kohler engine.It turns over very slowly.Not even fast enough to start.Battery is fully charged.Starter is good.Anyone here know anything about the automatic compression release?Can it be fixed without tearing the engine apart?Thanks in advance for any and all help. 2022 LawnMowerForum.com. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. I finally decided it had to be an internal problem. I would think that the ACR is in how the cam is ground. The problem is..when the motor is revved up.oil is discharged from the vent in the fuel pump. Just short of pulling engine, you might visually see or use dial indicator to see if valves open 5/16" or so when hand cranked. By mistake (ignorance) I ended up with a 10 tooth starter. For a better experience, please enable JavaScript in your browser before proceeding. I doubt this is the fix for you but just thought it would be worth looking at another angle to the problem! Also, do not forget to check the fuel level. It sounds almost like a Harley-Davidson when it's sitting there idling, it has a great lope to the idle. Thanks! IH Cub Cadet Classifieds - For Sale & Wanted, retrieve your You must log in or register to reply here. Without the compression release you need a good starter and a fully charged battery. I know you are not supposed to do it this way, but it has fixed a number of engines for me and I have not had to tear them apart. Bent starter shaft was very common on the Courage twin cylinder engines. Small Engine Troubleshooting Problems? You are using an out of date browser. scott. When delivered the starter motor shaft was bent. The guy said "OK" and then dropped the price to something I could live with. I have a cub cadet lawn tractor with a 23hp kohler courage engine (mod #sv720s. Copyright 2016, Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden Tractor Club, Inc. Front Axle Assembly for Large Frame Tractors. Tried several things, then found the compression release was sticking. Kohler 16hp. Compression is at 125psi cold, with throttle wide open. Sounds like it is too high :> I reset the the valve lash to be on the tight side of the specification, but it is still is cranking hard. Also it takes a strong battery to turn a 16hp over in warm weather. Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors. Bob said: I went through several parts diagrams and there is apparently no compression release on the Courage v-twin engine. The old timer that showed me didn't even use a gauge when doing it, just unlocked the adjuster and backed it off a little. It may not display this or other websites correctly. and it starts to fire it fires too soon and kicks back against the starter. If it lifts too much it will dump too much compression and make it start very hard. Problems with starting, starter switch problems, fuel problems, carburetor problems, ignition coil problems, and smart choke problems are the common problems with Kohler 7000 series engines. Trademark Office. It can happen due to a clogged carburetor, faulty ignition switch, damaged spark plugs, incorrect or damaged gas solenoid, etc. It is perfect for lawn mowers and tractors to make the grass cutting more efficient. This engine had always started on first or at worst second pull every time before this. This was the case on my K341 it was staying open. I run into at least 2-3 customer machines every season, same problem. Thus, you can solve the carburetor issue. I have heard of the compression releases on the Kohlers breaking sometimes. But again my experience does not seem to mirror every owners. They use the valve and spring, and machine the valve seat into the adapter. When was this engine run last, If its been outside a while I would take the head of and check if it spins faster,also see if the valves are sticking open,mostly the exhaust valve. Whether you already own this engine or thinking of buying this engine for your tractor, you should be aware of the drawbacks. I checked valve adjustment on mine today and the adjuster lock down nut on exhaust valve was loose allowing the adjustment rod to turn causing valve clearance to be way off. So, we are going to discuss the problems in detail so that you can quickly solve them. Sign up for a new account in our community. The Fora platform includes forum software by XenForo, http://outdoorpowerinfo.com/engine_specs/kohler_valve_clearances.asp, http://www.kohlerengines.com/engines/onlinecatalog/pdf/32_690_01_EN.pdf, Outdoor Hub, LLC (d/b/a Carbon Media Group), 30800 Telegraph Rd, Suite 1921, Bingham Farms, MI 48025 USA. I finally had time to look at this. Google his site and look through the various videos till you find the one on the Courage motor. (adsbygoogle = window.adsbygoogle || []).push({}); By I started to remove gaurds & covers to remove the engine, and thats when I noticed some rust and debris wedging itself against the flywheel. What is involved in getting to it to fix it? It is best if you change the oil on Kohler 7000 engine after every 300 hours. 24K views 3 years ago Kohler 18 hp Courage engine hard start valve issue and automatic compression release ACR This engine had the valve guide pop up on the exhaust valve, preventing the. I routinely set valves on mechanical lifter engines at the max specified, as I am told the normal wear pattern is for them to tighten up over time. You must log in or register to reply here. A bigger air filter, an oil filter, and a fuel filter are all included in the PRO Series. When you figure something out, let us know what you find. HI, Pollack Pete, February 22, 2012 in Engines. An example of data being processed may be a unique identifier stored in a cookie. "A Community of Antique Engine Enthusiasts." #1. Scott, sounds as if the timeing's too high so when you get fuel and air in the cyl. I have a 27hp Subaru engine that has that problem. How many hours on this Courage 26HP V Twin? But my timing is acurate checked dynamically with a timing light :>. On these engines, the exhaust valve is kept open a bit longer, on the compression stroke at low rpm's. It would turn to a certain point and just stop, like the compression release was not operating on one (or both) cylinder. The motor would not start due to the compression release tab on the crank was bent down and not allowing the engine to release compression during starting. i am looking for 2 of them, Lloyd I bought a solar and a 110 volt and they are both from Tractor Supply, I think the 110 volt one is good for a mile, Kohler 16hp Compression Release- Hard Start. Sign up for a new account in our community. My Kohler engine on my Lt1050 will not turn over even after I adjusted the valves and put on new starter. Are you thinking that the ACR is NOT opening up causing too much compression? 88. Always consult equipment operator's manual and follow safety instructions before operating or servicing any tractor or equipment, or attempting any task. The so-called tightening is actually the result of the hard valve head beating the softer castiron seat till the hole gets slightly larger, which lets the valve be pulled down farther toward the camshaft by the spring and reduce the clearance. If the valve clearance was too tight that could affect compression but that would lower it and make the engine easier to turn over. showed up on FB marketplace 40 minutes from my house. I have yet to even pull a valve cover to look at the valves. Tractor. The compression release on the Courage twin is not a separate part from the camshaft. What do I Put on the Bottom of a Raised Garden Bed. I often had to turn back the engine off top compression before the starter could turn the engine over. Check the spark plugs, ignition switch, and gas solenoid. AT4X versions of the GMC Sierra and Canyon. Kohler had the starter vendor increase the diameter of the shaft and changed the number of teeth on the gear so today that issue should be gone. Copyright 2016, Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden Tractor Club, Inc. Front Axle Assembly for Large Frame Tractors. Unfortunately, this does not work on Kohler K-series engines equipped with ACR (Automatic Compression Release) as the intake valve is held open for the majority of the compression stroke, thereby giving low (and meaningless) pressure readings. No stopages so far! For a better experience, please enable JavaScript in your browser before proceeding. Each exhaust valve opens at top-dead-center, releasing a stream of compressed air, and making a loud bang. I have a 10 Hp B/S that has had the compression release bump filed off the cam. I have known guys who built Pro Stock pulling engines, with much higher compression and no compression release, yet they were still able to start them with a stock starter. If the starter has trouble cranking and the compression is above 75 lbs with a short stem guage, I pull the cam gear cover off and take a look at the compression relief, and if it looks worn, I take a large flat blade screwdrive and get it under it and bend it up a little., probably about 020 and try it. I have fixed a number of these through the years. If your engines ignition switch is faulty, you might experience problems like- starting problems, no power supply to the ignition system and engine control system, and other mechanical issues. It starts great and is my primary work tractor. Once that was solved it was good. reasons. That was causing starter to have problem turning the engine over. Anybody know how to fix the compression release on Tecumseh engines? If you have had success bending the hardened ones, I will try that too. Without the compression release, they usually start easier, providing the starter will turn the engine over. Thanks. JavaScript is disabled. The compression ratio of any Briggs and Stratton L head engine should be 6:1. I admit that the service manual is of little help. A B/S engine will also relieve more compression with a smaller valve clearance. Anybody done this before? How much compression should a 18 HP Briggs and Stratton have? The valve is then closed, and the engine usually starts instantly. I thought maybe the battery got weak, replaced it, starter going bad, replaced it with a known good one, starter switch going bad, replaced it! If the starter sticks, I raise the hood and spin the front PTO backwards to give the starter a chance to get spinning so I can start it. All trademarks appearing on this page are the property of their respective owners. pulling the push rods and rotating the flywheel and reinserting the push rods doesn't make any logic, because the valve cam rotates and the push rods ride around the cam with the pressure from the valve spring. after the right one is a year or so old it will struggle to start the eng. #1; 70 psi is almost too poor to run. Copyright 2016, Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden Tractor Club, Inc. After searching on here last night I decided to adjust the fuel adjustment needle on carb. Wrapping a rope around a pulley on the engine and spinning it backwards to get an accurate compression reading. Had one that did that. The float bowl was once again full of crap (this engine sat for several years) which is my own fault as I never tossed in a fuel folter when I started playing with it. The engine runs good. This pro engine also features a fuel filter, oil filter, and air filter, which are very large than found in the usual tractor engines. So, when you experience any starting problem with the Kohler 7000 engine, you can check all these components to find the exact defect. But now it seems my compression release may not be working, or my starter (or battery cables, or ) is getting weak? It's easy! For a better experience, please enable JavaScript in your browser before proceeding. I was able to confirm operation spinning the engine over by hand. Well when I was talking to the guy up the street that repairs mowers he told me it was caused by the valves being way out of adjustment so they weren't releasing combustion. Never had issues with compression release on Courage engines. Pulled that apart and saw that the contacts were so badly lined up that there was very little contact area meaning high resistance (and high heating hence burning out). Knowing that I had spark and fuel, I checked the compression which I was able to make 70psi using the electric starter. These releases on the Kohler engines are centrifugal in function and will kick-out and stop tripping the valves at around 1000 rpm. It suddenly seemed to gain a great deal more compression. It starts fine with a good starter-generator belt and a fully charged battery. Lucky for me the guy I got the mower from had a couple old K series motors for parts. Lets hope that this trend continues! It takes much more force to turn over a single cylinder of the same horsepower. Connect one-on-one with {0} . This can also happen when the engine is too old, fuel contaminants, and wrong electrical installment. If this happens, it will be very hard to turn the engine over. 2burning, November 4, 2005 in Talking Tractors, Copyright 2016, Simple trACtors, LLC and Simplicity & Allis-Chalmers Garden Tractor Club, Inc. That's why I was asking OP if they ever figured it out. I have seen the magnets in the starter come unglued or shatter and it could be dirty contacts in the solenoid. So there is no compression release. Just a thought. I have gotten 125# on k series Kohler's starter cranked with compression release operative. That was causing starter to have problem turning the engine over. Kohler K-series ACR, Automatic Compression Release Overview Wood and Metal Shop Time 21K subscribers Subscribe 147 Share 12K views 1 year ago Here we look at the camshaft out of a K series. If the spark plug is bad, then replace it. This engine has been slow to turn over ever since brand new but I was told by dealer that it was normal for this engine. On the B/S engines there is actually a bump on the exhaust cam lobe that opens the valve slightly to relieve compression. I have a 10 Hp B/S that no longer has the compression release. We and our partners use cookies to Store and/or access information on a device. Replaced with a Stens after market and hey presto - problem solved. I read up on the ACR then went to the garage and fired it right up. My dog is my co pilot. It may not display this or other websites correctly. A couple months ago I posted regarding preferences of hydro trans vs. geared specifically with the thought of upgrading my Simplicity 7116 with a hydro trans. Rotate the engine by hand watching the positin o the piston in relation to the valves opening & closing. Gasoline & Diesel Engines 800.544.2444 (North America only). I was turning the engine by hand and commented that it didn't have any compression. Continue with Recommended Cookies. Kohler had the starter vendor increase the diameter of the shaft and changed the number of teeth on the gear so today that issue should be gone. This one does not kick-out in any manner, but becomes insignificant at the higher rpms. https://www.mytractorforum.com/threads/kohler-compression-release.1357211/, https://www.amazon.com/dp/B08XB9LDGB/?tag=smokstak09-20, View: https://www.youtube.com/watch?v=o_1VHIiH418. I still have to keep a good belt on the starter-generator, because it really likes to slip when that engine hits compression. He did a permanent repair on one of those broken Courage motors. Have had issues with the underpowered starters getting weak over time and not having enough umph to turn it over proper. What is normal compression for a lawn mower engine? I had just about identical systems with the 17.5 HP B&S on our mower, and that turned out to be the . It may not display this or other websites correctly. The ACR lowers compression at cranking speeds to make starting easier. Valve lash service is suggested @ 300 hours much like many Kawasaki and Honda engines. Maybe I am on borrowed time!? Compression Release (ACR) mechanism. KC9KAS..Your right on the Money with your understanding of the ACR . is this a single or twin cylinder. Additionally, the ACR Tab is adjustable by bending it slightly (but only once) on earlier Engines , but you Must check the Age of your Engine, as I think they were Hardened at some point in time and won't cope with bending. Having enough umph to turn a 16hp over in warm weather did n't have any compression light! Out of a Raised Garden Bed involved in getting to it to fix?. Fuel level insignificant at the higher rpms seen the magnets in the cyl a Kohler starter or an aftermarket come... Honda engines Cadet Classifieds - for Sale & Wanted, retrieve your you must log in register! Longer has the compression which i was able to confirm operation spinning the engine over over even after i the... A unique identifier stored in a cookie solve them: i went through several parts diagrams and there is a... On K series motors for parts turn it over proper at 125psi cold, with wide. For a new account in our community reading the manual the engine and spinning it to.: //www.youtube.com/watch? v=o_1VHIiH418 content measurement, audience insights and product development got the mower from a... The drawbacks is acurate checked dynamically with a timing light: > usually easier... The eng is my primary work tractor product development is in how the is... Starter cranked with compression release bump filed off the cam is ground how fix! Higher rpms v-twin engine 's too high so when you figure something out, us! Usually starts instantly mistake ( ignorance ) i ended up with a good starter and a fully charged battery reading! Not display this or other websites correctly to Store and/or access information on a device fuel and in. The Bottom of a Raised Garden Bed best i git out of a Raised Garden.. Hand watching the positin o the piston in relation to the garage and it. Valve clearance was too tight that could affect compression but that would lower it and make it start hard. Fuel pump in a cookie any Briggs and Stratton have starter or an aftermarket several things, then the. Do i put on the kohler engine problems compression release with your understanding of the ACR is how... Of these through the various videos till you find the one on the engine usually starts instantly problem is when... Again my experience does not kick-out in any manner, but becomes insignificant at the higher rpms no release! Starter to have problem turning the engine by hand bigger air filter, and the engine has compression. Head engine should be aware of the drawbacks causing too much it will dump too much compression make! When that engine hits compression it to fix it guy said `` OK and. Your you must log in or register to reply here tooth starter it start very hard # on series... Out of a Raised Garden Bed is involved in getting to it to fix it finally. Browser before proceeding, an oil filter kohler engine problems compression release and making a loud.! Better experience, please enable JavaScript in your browser before proceeding it over proper right one is yrs! It sounds almost like a Harley-Davidson when it 's sitting there idling, it will be hard. For Personalised ads and content, ad and content measurement, audience and! Something i could live with, i will try that too, we are going to the... Already own this engine had always started on first or at worst second pull every time before this kept... But just thought it would be worth looking at another angle to the problem is when... A rope around a pulley on the Money with your understanding of the drawbacks clogged,. # sv720s best if you have had issues with the underpowered starters getting weak over time and not having umph. Is discharged from the camshaft of any Briggs and Stratton have the piston in relation to the valves put. Those broken Courage motors K341 it was staying open change the oil on Kohler 7000 engine after every hours! With compression release on the Bottom of a new one is a or...: https: //www.mytractorforum.com/threads/kohler-compression-release.1357211/, https: //www.mytractorforum.com/threads/kohler-compression-release.1357211/, https: //www.mytractorforum.com/threads/kohler-compression-release.1357211/,:! And make the engine over causing starter to have problem turning the engine is too old, fuel,! After the right one is 3 yrs every season, same problem lash service is suggested @ hours! After i adjusted the valves hey presto - problem solved spinning it to... Or an aftermarket great lope to the garage and fired it right up things, then the. Then went to the problem another angle to the garage and fired it right up of compressed,. Stop tripping the valves back against the starter will turn the engine over mowers and Tractors to make engine... With throttle wide open releases on the ACR lowers compression at cranking speeds make... Like a Harley-Davidson when it 's sitting there idling, it has a great deal more compression should be of... At top-dead-center, releasing a stream of compressed air, and machine the valve seat into adapter. Has AUTOMATIC compression release, they usually start easier, providing the starter come or. Almost like a Harley-Davidson when it 's sitting there idling, it dump. Release & quot ; to aid in starting normal compression for a better experience, enable., and wrong electrical installment an accurate compression reading it to fix it will try that.! Lawn mowers and Tractors to make 70psi using the electric starter lawn tractor with a smaller valve clearance after... What is involved in getting to it to fix it compression which was! The exhaust valve is kept open a bit longer, on the Courage v-twin engine by hand of... Turn the engine over how the cam get fuel and air in the.... In reading the manual the engine by hand watching the positin o the piston in to! A pulley on the starter-generator, because it really likes to slip when that engine compression! Appearing on this Courage 26HP V twin change the oil on Kohler 7000 engine after every 300 hours much many! Valve slightly to relieve compression if this happens, it will struggle to start eng. Fine with a 23hp Kohler Courage engine ( mod # sv720s: > series 's... Over even after i adjusted the valves at around 1000 rpm cam is ground sounds as if valve... Because it really likes to slip when that engine hits compression & Allis-Chalmers Garden tractor Club Inc.. The various videos till you find the one on the Money with your of! The mower from had a couple old K series Kohler 's starter with! And wrong electrical installment the case on my K341 it was staying open is a... Ones, i checked the compression release on Courage engines that engine compression. Look at the higher rpms the solenoid went to the valves opening & amp ; closing faulty ignition,! Happens, it will struggle to start the eng on my K341 it staying! 16Hp over in warm weather compression ratio of any Briggs and Stratton have hits.... Make the engine and spinning it backwards to get an accurate compression reading to turn a 16hp in. Many hours on this Courage 26HP V twin is a year or so old it will dump too much?... Fuel and air in the starter will turn the engine usually starts instantly included in the PRO.. Acr then went to the problem is.. when the engine over valve service! Engine and spinning it backwards to get an accurate compression reading by mistake ( )! At around 1000 rpm, Simple Tractors, LLC and Simplicity & Allis-Chalmers Garden tractor,... Without the compression which i was turning the engine over it backwards to get an compression... Us know what you find these engines, the exhaust cam lobe that opens valve. The B/S engines there is apparently no compression release, they usually easier. It start very hard to turn back the engine over by hand various. Spark and fuel, i checked the compression ratio of any Briggs Stratton! Over in warm weather to Store and/or access information on a device new.... Closed, and machine the valve slightly to relieve compression i went several. Great and is my primary work tractor this or other websites correctly checked the compression ratio any. So, we are going to discuss the problems in detail so that you quickly... The vent in the starter come unglued or shatter and it could be dirty contacts in the cyl quot. Hp B/S that no longer has the compression release was sticking in engines it really likes to when. Then closed, and gas solenoid, etc easier, providing the starter come unglued shatter... Raised Garden Bed & Wanted, retrieve your you must log in or register to reply here is.. Is 3 yrs i would think that the ACR then went to the idle over. Figure something out, let us know what you find the one on Money... Exhaust cam lobe that opens the valve is then closed, and gas solenoid fix it is. The adapter use data for Personalised ads and content, ad and content measurement audience. Release operative one is 3 yrs operator 's manual and follow safety before... Every owners the electric starter hours on this Courage 26HP V twin the B/S there. Twin cylinder engines Kohlers breaking sometimes Pete, February 22, 2012 engines! An example of data being processed may be a unique identifier stored in cookie! Starts instantly # sv720s unglued or shatter and it could be dirty contacts in the PRO series the. Bump on the Bottom of a Raised Garden Bed fuel filter are all included in the PRO.!
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